20659743

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{47}}^1$

素因数の和:113

約数の個数: 54

約数和(自身を含む): 35056944

約数和(自身を除く): 14397201

約数列:

[1, 3, 9, 13, 17, 39, 47, 51, 117, 141, 153, 169, 221, 289, 423, 507, 611, 663, 799, 867, 1521, 1833, 1989, 2397, 2601, 2873, 3757, 5499, 7191, 7943, 8619, 10387, 11271, 13583, 23829, 25857, 31161, 33813, 40749, 48841, 71487, 93483, 122247, 135031, 146523, 176579, 405093, 439569, 529737, 1215279, 1589211, 2295527, 6886581, 20659743]

約数ペア:

[(1, 20659743), (3, 6886581), (9, 2295527), (13, 1589211), (17, 1215279), (39, 529737), (47, 439569), (51, 405093), (117, 176579), (141, 146523), (153, 135031), (169, 122247), (221, 93483), (289, 71487), (423, 48841), (507, 40749), (611, 33813), (663, 31161), (799, 25857), (867, 23829), (1521, 13583), (1833, 11271), (1989, 10387), (2397, 8619), (2601, 7943), (2873, 7191), (3757, 5499)]